Be careful! The part I received was manufactured wrong. The electrical contacts were permanently closed resulting in the starter operating regardless of the key position. It is not my key switch! I disconnected the solenoid coil wire (comes from the key switch) and the starter still continued to operate. I measured 0 ohms with the part removed across the large posts that are wired to the starter. I disassembled the part and discovered the contacts are permanently closed due to wrong sized parts.

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Worked as expectedby Joseph from Freedom, Pennsylvania on July 12, 2011

Worked as expected

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Review for Sierra 18-5802 Solenoidby a Customer on August 06, 2009

While installing the wire to the left-side terminal, using a 1/2 rachet box wrench, the plastic broke all around the solenoid.I don't believe the lock washer was even seated and I was only applying two finger pressure to the wrench. when I removed the solenoid from the engine the solenoid fell apart completely. Return authorized and hoping the response is not "installer failure" as I have been working on machines for 41 years.